[openwrt/openwrt] dropbear: add ssh-askpass support in configuration

[LEDE Commits]

ynezz pushed a commit to openwrt/openwrt.git, branch master:
https://git.openwrt.org/228298290e5de2a1a7404e90aef81ace68273683

commit 228298290e5de2a1a7404e90aef81ace68273683
Author: Konstantin Demin <rockdrilla at gmail.com>
AuthorDate: Wed Nov 25 06:14:30 2020 +0300

    dropbear: add ssh-askpass support in configuration
    
    binary size cost is much less than 1k.
    
    tested on ath79/generic:
      bin: 215128 -> 215132 (+4b)
      ipk: 111183 -> 111494 (+311b)
    
    Signed-off-by: Konstantin Demin <rockdrilla at gmail.com>
---
 package/network/services/dropbear/Config.in | 10 ++++++++++
 package/network/services/dropbear/Makefile  |  3 ++-
 2 files changed, 12 insertions(+), 1 deletion(-)

diff --git a/package/network/services/dropbear/Config.in b/package/network/services/dropbear/Config.in
index 6aa5a7e4e1..15000eff53 100644
--- a/package/network/services/dropbear/Config.in
+++ b/package/network/services/dropbear/Config.in
@@ -99,4 +99,14 @@ config DROPBEAR_SCP
 	bool "Build dropbear with scp"
 	default y
 
+config DROPBEAR_ASKPASS
+	bool "Enable askpass helper support"
+	default n
+	depends on DROPBEAR_DBCLIENT
+	help
+		This enables support for ssh-askpass helper in dropbear client
+		in order to authenticate on remote hosts.
+
+		Increases binary size by about 0.1 kB (MIPS).
+
 endmenu
diff --git a/package/network/services/dropbear/Makefile b/package/network/services/dropbear/Makefile
index 5021c2aee1..af346f44ac 100644
--- a/package/network/services/dropbear/Makefile
+++ b/package/network/services/dropbear/Makefile
@@ -32,7 +32,7 @@ PKG_CONFIG_DEPENDS:= \
 	CONFIG_DROPBEAR_CURVE25519 CONFIG_DROPBEAR_ZLIB \
 	CONFIG_DROPBEAR_ED25519 CONFIG_DROPBEAR_CHACHA20POLY1305 \
 	CONFIG_DROPBEAR_UTMP CONFIG_DROPBEAR_PUTUTLINE \
-	CONFIG_DROPBEAR_DBCLIENT CONFIG_DROPBEAR_SCP
+	CONFIG_DROPBEAR_DBCLIENT CONFIG_DROPBEAR_SCP CONFIG_DROPBEAR_ASKPASS
 
 include $(INCLUDE_DIR)/package.mk
 
@@ -136,6 +136,7 @@ DB_OPT_CONFIG = \
 	DROPBEAR_ECDH|CONFIG_DROPBEAR_ECC|1|0 \
 	!!DROPBEAR_ECC_384|CONFIG_DROPBEAR_ECC_FULL|1|0 \
 	!!DROPBEAR_ECC_521|CONFIG_DROPBEAR_ECC_FULL|1|0 \
+	DROPBEAR_CLI_ASKPASS_HELPER|CONFIG_DROPBEAR_ASKPASS|1|0 \
 
 
 TARGET_CFLAGS += -DARGTYPE=3 -ffunction-sections -fdata-sections -flto